"""如果你改变 people，cats 和 dogs 的初始值会发生什么？"""
# people = 20
# cats = 30
# dogs = 15
people = 0
cats = 1
dogs = 9

if people < cats:
      print("Too many cats! The world is doomed!")

if people > cats:
    print("Not many cats! The world is saved!")

if people < dogs:
    print("The world is drooled on!")

if people > dogs:
    print("The world is dry!")


dogs += 5

if people >= dogs:
    print("People are greater than or equal to dogs.")

if people <= dogs:
    print("People are less than or equal to dogs.")


if people == dogs:
    print("People are dogs.")

#只打印出满足条件的语句